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Ultrasonic Sensing Method for Evaluating the Limit State of Metal Structures Associated with the Onset of Plastic Deformation
Physical Mesomechanics ( IF 1.6 ) Pub Date : 2020-05-01 , DOI: 10.1134/s102995992003008x
V. I. Erofeev , A. V. Ilyakhinsky , E. A. Nikitina , P. A. Pakhomov , V. M. Rodyushkin

Abstract The deformation behavior of St3 steel was studied to show that the stress-strain state of a structure can be estimated using Rayleigh surface waves in both the elastic and plastic region. The most informative parameters in the analysis of the limit state associated with the onset of plastic deformation are the dispersion and shape of the probing signal. If the processes governing the effect of the medium on the elastic wave parameters are represented by a statistical model in the form of the Dirichlet distribution, it is possible to single out a new diagnostic feature of acoustic anisotropy in a structure which describes ultrasonic wave propagation in a material under elastic-plastic deformation. These data can be used for a preliminary assessment of the degree of structural deformation, before assessing its state from wave velocity measurement results.

中文翻译:

用于评估与塑性变形开始相关的金属结构极限状态的超声传感方法

摘要 对 St3 钢的变形行为进行了研究,以表明可以在弹性和塑性区域使用瑞利表面波估计结构的应力应变状态。在与塑性变形开始相关的极限状态分析中,信息量最大的参数是探测信号的色散和形状。如果控制介质对弹性波参数影响的过程由狄利克雷分布形式的统计模型表示,则有可能在描述超声波传播的结构中挑出一个新的声学各向异性诊断特征。处于弹塑性变形状态的材料。这些数据可用于初步评估结构变形程度,
更新日期:2020-05-01
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